Deploying applications in the QM partition¶

The AutoSD architecture isolates quality managed (QM) applications from Automotive Safety Integrity Level (ASIL) applications. This isolation mechanism is the QM software partition. In this architecture, the QM partition is an imageless container that uses a subsection of the host filesystem as its root filesystem. This means that you must place your applications in one of two locations:

Configure OSBuild to copy ASIL applications to /etc/containers/systemd
Configure OSBuild to copy QM applications to /etc/containers/systemd inside the QM software partition, which is mounted at /usr/share/qm/. The resulting path for QM applications is /usr/share/qm/etc/containers/systemd.

To configure the placement of applications in the QM partition, create a new qm_rootfs pipeline in your manifest file, and configure the QM-specific stages to perform operations in the QM partition. Specifically, configure the new qm_rootfs pipeline to call the preconfigured qm_rootfs_base pipeline from the qm.ipp.yml file. This pipeline contains the instructions to build the root file system for the QM partition. This file system is then mounted at /usr/share/qm/ when OSBuild assembles the operating system (OS).

Embedding RPM packages in the QM partition¶

Place all QM-level RPM packages in the QM partition.

Prerequisites

An RPM package of your application, named auto-apps, in an RPM package repository located in the /var/tmp/my_repo directory and built according to Packaging applications with RPM
A custom manifest file, such as the file that you created in Embedding RPM packages in the AutoSD image

Procedure

To configure your custom OSBuild manifest to install your auto-apps application into the QM partition of the OS image, set use_qm: true in the mpp-vars section of your manifest file, and define your auto-apps RPM package in the qm_extra_rpms variable:
```
mpp-vars:
  name: <my-manifest>
  use_qm: true
  qm_extra_rpms:
    - auto-apps
```
When you set use_qm: true, OSBuild invokes another manifest file which contains the qm_rootfs_base pipeline that configures the QM partition.

Create a new qm_rootfs pipeline in your manifest file and include the following snippet to reference the qm_rootfs_base pipeline:

- name: qm_rootfs
  build: name:build
  stages:
  - type: org.osbuild.copy
    inputs:
      tree:
        type: org.osbuild.tree
        origin: org.osbuild.pipeline
        references:
          - name:qm_rootfs_base

Next steps

Now that you have configured your custom OSBuild manifest to initialize the QM partition and install your RPM package, you can build your AutoSD image. For more information, see Building an AutoSD image.

Additional resources

Sample custom OSBuild manifest

Embedding containerized applications in the QM partition¶

Place all QM-level containerized applications in the QM partition.

Prerequisites

The ID of your auto-apps container image that you retrieved in Embedding containerized applications in the AutoSD image
A custom manifest file, such as the file that you created in Embedding RPM packages in the AutoSD image

Procedure

Create a new pipeline, named qm_rootfs, in your manifest file to reference the qm_rootfs_base pipeline, which configures the QM partition:

- name: qm_rootfs
  build: name:build
  stages:
  - type: org.osbuild.copy
    inputs:
      tree:
        type: org.osbuild.tree
        origin: org.osbuild.pipeline
        references:
          - name:qm_rootfs_base
   options:
     paths:
       - from: input://tree/
         to: tree:///

Configure the new qm_rootfs pipeline to extract the container image into the QM partition of your OS image at build time:

Include the ID of the container image in a new org.osbuild.skopeo stage in the qm_rootfs pipeline of your manifest file:

- type: org.osbuild.skopeo
  inputs:
    images:
      type: org.osbuild.containers-storage
      origin: org.osbuild.source
      references:
        sha256<your-container-image-ID>:
          name: localhost/auto-apps:latest

Include the containers-storage option to place the container image in /usr/share/containers/storage, rather than the default, /var/lib/containers/storage:

- type: org.osbuild.skopeo
    inputs:
      images:
        type: org.osbuild.containers-storage
        origin: org.osbuild.source
        references:
          sha256:<your-container-image-ID>:
            name: localhost/auto-apps:latest
    options:
      destination:
        type: containers-storage
        storage-path:
          mpp-eval: containers_extra_store

To configure your custom OSBuild manifest to copy your container configuration files to /usr/share/qm/etc/containers/systemd, create a new org.osbuild.copy stage inside the qm_rootfs pipeline of the manifest file:

- type: org.osbuild.copy
  inputs:
    inlinefile1:
      type: org.osbuild.files
      origin: org.osbuild.source
      mpp-embed:
        id: radio.container
        path: ../files/radio.container
    inlinefile2:
      type: org.osbuild.files
      origin: org.osbuild.source
      mpp-embed:
        id: engine.container
        path: ../files/engine.container
  options:
    paths:
- from:
    mpp-format-string: input://inlinefile1/{embedded['radio.container']}
  to: tree:///usr/share/qm/etc/containers/systemd/radio.container
- from:
    mpp-format-string: input://inlinefile2/{embedded['engine.container']}
  to: tree:///usr/share/qm/etc/containers/systemd/engine.container

Note

The path: option resolves a relative path. In this example, your container configuration files are in the ../files directory.

Next steps

Now that you have included your containerized application in your OSBuild manifest, you can build your AutoSD image. For more information, see Building an AutoSD image.

Additional resources

Sample custom OSBuild manifest